JPS63228419A - 対物レンズ位置検出装置 - Google Patents

対物レンズ位置検出装置

Info

Publication number
JPS63228419A
JPS63228419A JP6006687A JP6006687A JPS63228419A JP S63228419 A JPS63228419 A JP S63228419A JP 6006687 A JP6006687 A JP 6006687A JP 6006687 A JP6006687 A JP 6006687A JP S63228419 A JPS63228419 A JP S63228419A
Authority
JP
Japan
Prior art keywords
objective lens
photodetector
position detection
light
lens position
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP6006687A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0554178B2 (enrdf_load_stackoverflow
Inventor
Naoyuki Ekusa
尚之 江草
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP6006687A priority Critical patent/JPS63228419A/ja
Publication of JPS63228419A publication Critical patent/JPS63228419A/ja
Publication of JPH0554178B2 publication Critical patent/JPH0554178B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Optical Recording Or Reproduction (AREA)
JP6006687A 1987-03-17 1987-03-17 対物レンズ位置検出装置 Granted JPS63228419A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6006687A JPS63228419A (ja) 1987-03-17 1987-03-17 対物レンズ位置検出装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6006687A JPS63228419A (ja) 1987-03-17 1987-03-17 対物レンズ位置検出装置

Publications (2)

Publication Number Publication Date
JPS63228419A true JPS63228419A (ja) 1988-09-22
JPH0554178B2 JPH0554178B2 (enrdf_load_stackoverflow) 1993-08-11

Family

ID=13131339

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6006687A Granted JPS63228419A (ja) 1987-03-17 1987-03-17 対物レンズ位置検出装置

Country Status (1)

Country Link
JP (1) JPS63228419A (enrdf_load_stackoverflow)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61233305A (ja) * 1985-04-09 1986-10-17 Matsushita Electric Ind Co Ltd 位置検出装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61233305A (ja) * 1985-04-09 1986-10-17 Matsushita Electric Ind Co Ltd 位置検出装置

Also Published As

Publication number Publication date
JPH0554178B2 (enrdf_load_stackoverflow) 1993-08-11

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term